<?php   
class SubPages{   
     
  private  $each_disNums;//每页显示的条目数   
  private  $nums;//总条目数   
  private  $current_page;//当前被选中的页   
  private  $sub_pages;//每次显示的页数   
  private  $pageNums;//总页数   
  private  $page_array = array();//用来构造分页的数组   
  private  $subPage_link;//每个分页的链接   
  private  $subPage_type;//显示分页的类型
  private  $page_str; 
  private  $split_str; 
  
  function __construct($each_disNums,$nums,$current_page,$sub_pages,$subPage_link,$subPage_type,$split_str){ 
   $this->split_str=$split_str;   
   $this->each_disNums=intval($each_disNums);   
   $this->nums=intval($nums);   
    if(!$current_page){   
    $this->current_page=1;   
    }else{   
    $this->current_page=intval($current_page);   
    }   
   $this->sub_pages=intval($sub_pages);   
   $this->pageNums=ceil($nums/$each_disNums);   
   $this->subPage_link=$subPage_link;    
   $this->page_str=$this->show_SubPages($subPage_type);      
  }  

  function getstr(){
  	return $this->page_str;
  } 
  function __destruct(){   
    unset($each_disNums);   
    unset($nums);   
    unset($current_page);   
    unset($sub_pages);   
    unset($pageNums);   
    unset($page_array);   
    unset($subPage_link);   
    unset($subPage_type);   
   }   
 
  function show_SubPages($subPage_type){   
    if($subPage_type == 1){   
    return $this->subPageCss1();   
    }elseif ($subPage_type == 2){   
    return $this->subPageCss2();   
    }   
   }   
     
 
  function initArray(){   
    for($i=0;$i<$this->sub_pages;$i++){   
    $this->page_array[$i]=$i;   
    }   
    return $this->page_array;   
   }   
      
  function construct_num_Page(){   
    if($this->pageNums < $this->sub_pages){   
    $current_array=array();   
     for($i=0;$i<$this->pageNums;$i++){    
     $current_array[$i]=$i+1;   
     }   
    }else{   
    $current_array=$this->initArray();   
     if($this->current_page <= 3){   
      for($i=0;$i<count($current_array);$i++){   
      $current_array[$i]=$i+1;   
      }   
     }elseif ($this->current_page <= $this->pageNums && $this->current_page > $this->pageNums - $this->sub_pages + 1 ){   
      for($i=0;$i<count($current_array);$i++){   
      $current_array[$i]=($this->pageNums)-($this->sub_pages)+1+$i;   
      }   
     }else{   
      for($i=0;$i<count($current_array);$i++){   
      $current_array[$i]=$this->current_page-2+$i;   
      }   
     }   
    }   
      
    return $current_array;   
   }   

  function subPageCss1(){   
   $subPageCss1Str="";   
//   $subPageCss1Str.="共".$this->nums."条记录，";   
//   $subPageCss1Str.="每页显示".$this->each_disNums."条，";   
   $subPageCss1Str.="当前第".$this->current_page."页 / 共".$this->pageNums."页 ";   
    if($this->current_page > 1){   
    $firstPageUrl=$this->subPage_link."1".$this->split_str;   
    $prewPageUrl=$this->subPage_link.($this->current_page-1).$this->split_str;   
//    $subPageCss1Str.="<a href='$firstPageUrl'>首页</a> ";   
    $subPageCss1Str.="<a href='$prewPageUrl' class='previous-page'>上一页</a> ";   
    }else {   
//    $subPageCss1Str.="首页 ";   
    $subPageCss1Str.="<a class='no-previous'>上一页</a> ";   
    }   
      
    if($this->current_page < $this->pageNums){   
    $lastPageUrl=$this->subPage_link.$this->pageNums.$this->split_str;   
    $nextPageUrl=$this->subPage_link.($this->current_page+1).$this->split_str;   

    $subPageCss1Str.=" <a href='$nextPageUrl' class='next-page'>下一页</a> ";   
//    $subPageCss1Str.="<a href='$lastPageUrl'>尾页</a> ";   
    }else {   
    $subPageCss1Str.="<a class='no-next'>下一页</a> ";   
//    $subPageCss1Str.="尾页 ";   
    }   
      
    return $subPageCss1Str;   
      
   }   
     

  function subPageCss2(){   
   $subPageCss2Str="";   
   //$subPageCss2Str.="当前第".$this->current_page."页 / 共".$this->pageNums."页";   
      
      
    if($this->current_page > 1){   
    $firstPageUrl=$this->subPage_link."1".$this->split_str;   
    $prewPageUrl=$this->subPage_link.($this->current_page-1).$this->split_str;   
    $subPageCss2Str.="<a href='$firstPageUrl'>首页</a>";   
    $subPageCss2Str.="<a href='$prewPageUrl' title='转到上一页'>上一页</a>";   
    }else {   
    $subPageCss2Str.="";   
    $subPageCss2Str.="";   
    }   
      
   $a=$this->construct_num_Page();   
    for($i=0;$i<count($a);$i++){   
    $s=$a[$i];   
     if($s == $this->current_page ){   
     $subPageCss2Str.="<span>".$s."</span>";   
     }else{   
     $url=$this->subPage_link.$s.$this->split_str;   
     $subPageCss2Str.="<a href='$url'>".$s."</a>";   
     }   
    }   
      
    if($this->current_page < $this->pageNums){   
    $lastPageUrl=$this->subPage_link.$this->pageNums.$this->split_str;   
    $nextPageUrl=$this->subPage_link.($this->current_page+1).$this->split_str;   
    $subPageCss2Str.="<a href='$nextPageUrl' title='转到下一页'>下一页</a>";   
    //$subPageCss2Str.="<a href='$lastPageUrl'>尾页</a> ";   
    }else {   
    $subPageCss2Str.="";   
    $subPageCss2Str.="";   
    }   
    return $subPageCss2Str;   
   }   
}   
?>
